Update variable name for save button.

Changes:
    - Update the variable name for save button for Power restore policy

Tested: Ran successfully /gui/gui_test/settings_menu/test_power_restore_policy_sub_menu.robot
Change-Id: I95413c6d228b20802a818d2ba99a22a59a9e952e
Signed-off-by: rramyasr-in <rramyasr@in.ibm.com>
diff --git a/gui/gui_test/settings_menu/test_power_restore_policy_sub_menu.robot b/gui/gui_test/settings_menu/test_power_restore_policy_sub_menu.robot
index 6c342c1..81d4661 100644
--- a/gui/gui_test/settings_menu/test_power_restore_policy_sub_menu.robot
+++ b/gui/gui_test/settings_menu/test_power_restore_policy_sub_menu.robot
@@ -15,7 +15,7 @@
 ${xpath_AlwaysOn_radio}                //input[@value='AlwaysOn']
 ${xpath_AlwaysOff_radio}               //input[@value='AlwaysOff']
 ${xpath_LastState_radio}               //input[@value='LastState']
-${xpath_save_settings_button}          //button[contains(text(),'Save settings')]
+${xpath_save_settings_button}          //button[contains(text(),'Save')]
 
 *** Test Cases ***